Search results for "Beni"
showing 10 items of 1421 documents
Terahertz Absorption change in Photosynthetic Reaction Center upon photoactivation
2012
Photosynthetic reaction center is a membrane protein which plays an important role in converting solar energy into chemical energy. Upon continuous illumination a charge separation occurs within the protein which is stable for several seconds [1]. The stability of this state is very important to protect the protein against the release of excess heat and an instable radical due to charge recombination. Absorption of terahertz radiation corresponds to the excitation of large vibrations in the protein and is thus suitable for studying its different dynamical states. Here we recorded terahertz absorption spectra of the dark and illuminated state of reaction centre from the purple membrane bacte…
Environmental Aspect Concerning Phthalates Contamination: Analytical Approaches and Assessment of Biomonitoring in the Aquatic Environment
2023
This review is a survey of recent progress in studies concerning the impact of phthalic acid esters in aquatic organisms. After introducing the classification, properties, sources, fate, and toxic effects related to phthalates, an overview of the techniques of extraction and analysis of these substances is provided. As a result, the general concepts of environmental bioindicators, biomonitoring systems, and other concepts related to phthalate contamination in the aquatic environment are presented. Recent bioaccumulation data of different phthalates are summarised in a table and organised according to the type of organism, tissue, and geographical area of sampling. Bioindicator organisms tha…
Patrimonio culturale a rischio. Una risposta dall'Europa. Il Progetto Polirisk – Politiques comparées: patrimoine, aménagemet et risques naturels
2008
L'articolo presenta gli esiti della "Opération Cadre Régionale Noé – Patrimoine et Prévention des Risques Naturels", finanziata dalla Commissione Europea all’interno del Programma di Iniziativa Comunitaria (PIC) Interreg IIIC Sud per il periodo 2006-2008. Il progetto "Noé" è rivolto in particolare alla creazione di un campo di sperimentazione rivolto all’ottimizzazione delle politiche regionali di protezione del patrimonio culturale e ambientale dai rischi di origine naturale; l’obiettivo è quello di promuovere – attraverso il confronto interregionale, l’approccio multidisciplinare e il confronto di competenze professionali – una azione coordinata tra le istituzioni pubbliche ed i soggetti …
Sistemi comparati. Contributo siciliano al Progetto Polirisk
2007
Polirisk – sottoprogetto del Progetto NOE – ha coinvolto direttamente tre regioni europee appartenenti all’Italia, alla Francia ed al Portogallo, ovvero la Regione Sicilia, la Regione Provence-Alpes-Côte d’Azur (PACA) e la Regione Norte de Portugal. Le organizzazioni associate e partner del progetto sono state rispettivamente UNIMED – Unione delle Università del Mediterraneo, l’Ecole d’Avignon e l’IGAP – Instituto de Gestão e Administração Pública (Portugal). La finalità generale attorno a cui il progetto ha riunito i partner riguarda l’analisi e la comparazione tra i sistemi giuridici, tecnici e amministrativi delle differenti regioni preposti all'assetto del territorio in funzione della p…
I paesaggi del lavoro
2013
Il patrimonio culturale, le risorse della natura, la potenza dei paesaggi: gli stessi attrattori che hanno richiamato i viaggiatori del Grand Tour, modificati da usi sempre più consapevoli e resi più accessibili logisticamente e culturalmente, sono gli assi portanti dell’attrattività turistica del contesto territoriale della punta occiddentale della Scilia, caso di studio preso in esame dalla ricerca PRIN ITATOUR. Gli elementi del paesaggio e del patrimonio culturale della punta occidentale siciliana raggiungono vette di eccellenza in molti settori; tuttavia essi dovrebbero essere colti, più che nella loro individualità, come componenti di un sistema integrato di relazioni funzionali e cult…
PICOPHYTOPLANKTON DYNAMICS IN NOISY MARINE ENVIRONMENT
2012
We present a stochastic reaction-diffusion-taxis model to describe the picophytoplankton dynamics along a water column. The model, which is valid for poorly mixed waters, typical of the Mediterranean Sea, considers intraspecific competition of picophytoplankton for light and nutrients. Random fluctuations of environmental variables are taken into account by adding a source of multiplicative noise to the diffusion equation for the picophytoplankton biomass concentration, whose distribution along the water column shows a maximum at a certain depth. After converting our results into chlorophyll a concentrations, we compare theoretical distributions, obtained for different noise intensities, wi…
Identification of Polycyclic Aromatic Hydrocarbons (PAHs) in the black crusts of Sicilian stone monuments: distribution and sources
2004
Polycyclic Aromatic Hydrocarbons are a family of compounds with known carcinogenic potential; their properties of lipophilicity, low water solubility and adsorption to particles and sediments make them a potentially dangerous group of chemicals and a threat to the environment and its bio-resources. The concentrations of total Polycyclic Aromatic Hydrocarbons (PAHs) and 19 individual compounds in 8 black crusts sampled from historical building of Palermo (Italy) were analyzed, by gas chromatography/mass spectrometry (GC/MS) in selected ion monitoring (SIM) mode. PAH concentrations ranged from 78 to 9798 g/Kg of dry matrix. The resulting distributions and molecular ratios of specific compo…
Construction of whiteness and blackness in Herman Melville's "Benito Cereno"
2020
Zamiast otwartego potępienia niewolnictwa, świat przedstawiony Benito Cereno rozprasza sprzeciw wobec tyranii poprzez zawiłą konstrukcję relacji podmiotowo-przedmiotowych, kontekst sytuacyjny, stłumione, nie do końca wyartykułowane wypowiedzi Benito Cereno, obrazy oraz złożoną strukturę dzieła. Za pomocą przemilczeń, zastosowania różnorodnych punktów widzenia, napomknięć, czy wyrazistej niedookreśloności, dzieło Melvilla nie tylko wpisuje się w romantyczne kwestionowanie historiografi i, ale również wychodzi naprzeciw postmodernistycznej nieoczywistości. Jest to utwór, w którym czytelnik zostaje zaproszony do bycia współautorem wypełniającym luki i przemilczenia własną interpretacją.
Ink depletion-free printing of phospholipids micropatches
2021
Territorio e comunità nel prisma della rigenerazione urbana: tendenze evolutive e nuovi modelli giuridici
2019
In the national legal system, the legal debate highlights a particular attention to the subject of the territorial government, with respect to which the fourth generation regional legislators have experimented with new tools and new legal models, enhancing the participation of citizens in decision-making processes. In this context, the codification of a "city law" is discussed which, in the analysis carried out, is deepened by verifying the contents of the regional disciplines compared, which demonstrate, also, the absence of adequate valorisation of cultural heritage in local public policies.